Improvement in high-pressure gas-regulators



J. M. POST-ER & G. E. LOOKWOOD. High-Pressure Gas-Regulators.

No; 210,314. Patented Nov. 26,1878.

w i a 680m ASHINGTON DC UNITED STATES PATENT QFFIGE.

JOHN M. FOSTER AND GEORGE E. LOGKWOOD, OF PHILADELPHIA, PENN- SYLVANIA,ASSIGNORS OF ONE-THIRD THEIR RIGHT TO CHARLES E.

MORGAN, OF SAME PLACE.

IMPROVEMENT lN HIGH-PRESSURE GAS-REGULATORS.

Specification forming part of Letters Patent No. 210,314, dated November26, 1878 application filed September 9, 1878.

To all whom it may concern:

Be it known that we, JOHN M. FOSTER and GEORGE E. LooKwoon, ofPhiladelphia, Pennsylvania, have invented a new and useful Improvementin High-Pressure Gas-Regulators, of which the following is aspecification:

Our invention relates to a certain improvementin devices for regulatingthe pressure of gas as it passes from a reservoir to the burners, theobject of our invention being to so construct the device that it isespecially applicable for use in connection with the illuminatingapparatus of railway-cars, &o., in which the gas is maintained in thereservoir under heavy pressure. This object we attain in the followingmanner, reference being had to the accompanying drawing, in which-Figure 1 is a longitudinal section of our improved regulator forhigh-pressure gas; Fig. 2, an end view of the same, partly in section;and Figs. 3 and 4, detached views of part of the apparatus.

The casing of the apparatus comprises the double convex portion A andthe extension B, the interior of the casing being separated into twochambers, A and B, by a flexible diaphragm, D, the edge of which issecured to a suitable flange on the interior of the upper portion, A, ofthe casin g. The chamberA communicates with the atmosphere through anopening, a, while gas is admitted to the chamber B, as describedhereinafter, and is dis charged therefrom through the valved pipe E,which supplies the burners.

At one end of the chamber B is acasing, F, the interior of whichcommunicates through a passage, 1), in a stem, d, with the pipe leadin gto the gas-reservoir. One end of the casing F is closed by a ring, 0,the inner face of which forms a seat for a disk-valve, 1'', both valveand seat being furnished with ports 2', the opening or closing of whichis effected by the partial rotation of the valve f. The valve f has astem, m, which projects through the central opening of the ring 6 and onthe inner face of the valve is formed an eccentric, n, which is embracedby a sleeve attached to or forming part of the stem of a conical valve,8, the latter being adapted to a seat formed at the upper end of thepassage b.

To a threaded opening in the eccentric n is adapted a' threadedprojection, t, on the inner face of a disk, g, the outer face of whichis adapted to a seat formed on the inside of a screw plug, j, whichcloses one end of the casing F, a stem, 1;, on the disk 9 extendingthrough a central opening in said plug j.

The object of employing the disk 9 is to balance the pressure exerted bythe gas on the valve f and the object of connecting the said disk to thevalve by a threaded projection is to permit the lateral adjustment ofthe valve and disk in respect to each other after the ring 6 and plug jhave been screwed into place, so that the valve and disk may be firmlyseated against the ring and plug.

The disk 9 and plug j may have ports formed in them in the same manneras the valve f and ring 0, if desired.

To prevent the escape of gas around the ring 6, a packing-ring, p, isfirmly pressed by means of a screw-cap, h, against the end of the casingF and the outer face of the ring.

The outer end of the stem on of the valve f is reduced to a square orangular section, and is adapted to an opening of similar shape in one ofthe arms of a forked rod, G, the other arm of which embraces the end ofthe stem '0, and is split and provided with an ad justin gscrew, wherebyit may be clamped to or released from the said stem, as desired.

The end of the rod G is bent upward and pivoted to the upper ends of twoarms, I, hung at the lower ends to a rod, 20, which is'carried by theforked frame J, the latter being secured at the top to a rod, M, atachedto the diaphragm D. At each end of the rod 10 is a button, so, thesebuttons being adapted to internal guides 51 formed'on or attached to theopposite sides of the extension B of the casin g. In one side of thelatter, at a point adjacent to the valve-casing F, is formed an opening,to which is adapted a screw-plug, S, and in the opposite side of thecasing is a smaller opening, to which is adapted a screw-plug, T, the

object of these plugs being to permit access to the valve-casing Fwithout necessitating the removal of the diaphragm D.

The operation of the device is as follows: When the parts are in theposition shown in Fig. 1, the ports of the valve f are in line withthose of the ring 0, and gas can freely enter the chamber 13. As soon asthe pressure of gas in this chamber exceeds the weight of the diaphragmD the latter rises, thus, through the medium of the devices described,operatin g the valve f and closing the ports z'to such an extent thatthe amount of gas which is permitted to pass through the same is justsufficient to maintain in the chamber 13 a pressure which will preventthe descent of the diaphragm, he latter being weighted to such an extentthat the gas will be supplied to the burners at the proper pressure.

In case of an undue decrease of pressure in the chamber B, the diaphragmwill descend so as to open the valve f to an extent sufficient torestore the pressure to its normal degree.

In the event of a sudden or violent increase of pressure in the chamberB, the upward movement of the diaphragm will cause such a movement ofthe valve f as not only to close the ports 2', but, through the mediumof the eccentric a, to force the valve 8 down onto its seat, thuseffectually cutting off the flow of gas.

The object of connecting the stem 1; of the disk g to the arm of the rodG by a frictionclutch is to permit the turning of said stem, so as toproperly adjust the disk 1 after the rod G has been fitted into place.

Although we have shown and described a peculiar form of valve, we do notdesire to be limited to that particular form, as various constructionsof valves having ports to be opened and closed by the movement of asuitable plug or slide can be used in carrying out our invention.

Our invention is distinct from that class of pressure-regulators inwhich a valve connected directly to a diaphragm is adapted to an opening in a partition, through which opening the gas has to pass in order toescape, as such a device would be worthless if used in connection withgas under heavy pressure.

Ve claim as our invention 1. A pressure-regulator in which a casinghaving an outlet to the burners is combined with a valve for admittinggas to said casing, a diaphragm exposed to the pressure of gas therein,and devices whereby the diaphragm is caused to effect the opening andclosing of the ports of the valve, as set forth.

2. The combination of the diaphragm and the valve with the rod M, theframe J, the guided rod to, the arms I, and the rod G, as specified.

3. The combination of the valve f and its eccentric n with the valve ,9,as set forth.

4.. The combination of the valve f with the adjustable disk g, as setforth.

5. The combination of the valve f and its stem m, with angular end, thedisk g and its round stem r, and the rod G, one arm of which is adaptedto the angular end of the stem m, while the other arm has afriction-clutch adapted to the stem e, as specified.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

JOHN M. FOSTER. GEORGE E. LOO'KWOOD. Witnesses:

HARRY A. CRAWFORD, HARRY SMITH.

